My droppings board is about 11" wide (it was an old 1 x 12 I think). i'd have liked it to be about 1" wider to catch ALL the poop. It's removeable (just sits on cleats) for scrubbing, and covered with a scrap of vinyl flooring. we scoop a bit of floor litter -shavings- onto it to absorb the watery stuff and make scopping it off each morning easier.
Hope this helps.
Stacey

Hope this helps.
Stacey